common: handle paddle billing errors

Streetwriters.Common/Interfaces/IUserAccountService.cs

@@ -7,7 +7,7 @@ namespace Streetwriters.Common.Interfaces
     public interface IUserAccountService
     {
         [WampProcedure("co.streetwriters.identity.users.get_user")]
-        Task<UserModel> GetUserAsync(string clientId, string userId);
+        Task<UserModel?> GetUserAsync(string clientId, string userId);
         [WampProcedure("co.streetwriters.identity.users.delete_user")]
         Task DeleteUserAsync(string clientId, string userId, string password);
         // [WampProcedure("co.streetwriters.identity.users.create_user")]

Streetwriters.Common/Services/PaddleBillingService.cs

@@ -58,7 +58,7 @@ namespace Streetwriters.Common.Services
             return await response.Content.ReadFromJsonAsync<ListTransactionsResponseV2>();
         }
 
-        public async Task<bool> RefundTransactionAsync(string transactionId, string transactionItemId, string reason = "")
+        public async Task<PaddleResponse?> RefundTransactionAsync(string transactionId, string transactionItemId, string reason = "")
         {
             var url = $"{PADDLE_BASE_URI}/adjustments";
             var response = await httpClient.PostAsync(url, JsonContent.Create(new Dictionary<string, object>
@@ -77,7 +77,7 @@ namespace Streetwriters.Common.Services
                 { "reason", reason },
                 { "transaction_id", transactionId }
             }));
-            return response.IsSuccessStatusCode;
+            return await response.Content.ReadFromJsonAsync<PaddleResponse>();
         }
 
         public async Task<SubscriptionPreviewResponse?> PreviewSubscriptionChangeAsync(string subscriptionId, string newProductId, bool isTrialing)
@@ -102,28 +102,28 @@ namespace Streetwriters.Common.Services
             return await response.Content.ReadFromJsonAsync<PaddleResponse>();
         }
 
-        public async Task<bool> CancelSubscriptionAsync(string subscriptionId)
+        public async Task<PaddleResponse?> CancelSubscriptionAsync(string subscriptionId)
         {
             var url = $"{PADDLE_BASE_URI}/subscriptions/{subscriptionId}/cancel";
             var response = await httpClient.PostAsync(url, JsonContent.Create(new { effective_from = "immediately" }));
-            return response.IsSuccessStatusCode;
+            return await response.Content.ReadFromJsonAsync<PaddleResponse>();
         }
 
-        public async Task<bool> PauseSubscriptionAsync(string subscriptionId)
+        public async Task<PaddleResponse?> PauseSubscriptionAsync(string subscriptionId)
         {
             var url = $"{PADDLE_BASE_URI}/subscriptions/{subscriptionId}/pause";
             var response = await httpClient.PostAsync(url, JsonContent.Create(new { }));
-            return response.IsSuccessStatusCode;
+            return await response.Content.ReadFromJsonAsync<PaddleResponse>();
         }
 
-        public async Task<bool> ResumeSubscriptionAsync(string subscriptionId)
+        public async Task<PaddleResponse?> ResumeSubscriptionAsync(string subscriptionId)
         {
             var url = $"{PADDLE_BASE_URI}/subscriptions/{subscriptionId}";
             var response = await httpClient.PatchAsync(url, JsonContent.Create(new Dictionary<string, string?>
             {
                 {"scheduled_change", null}
             }));
-            return response.IsSuccessStatusCode;
+            return await response.Content.ReadFromJsonAsync<PaddleResponse>();
         }
 
         public async Task<GetCustomerResponse?> FindCustomerFromTransactionAsync(string transactionId)

Streetwriters.Identity/Services/UserAccountService.cs

@@ -12,11 +12,11 @@ namespace Streetwriters.Identity.Services
 {
     public class UserAccountService(UserManager<User> userManager, IMFAService mfaService) : IUserAccountService
     {
-        public async Task<UserModel> GetUserAsync(string clientId, string userId)
+        public async Task<UserModel?> GetUserAsync(string clientId, string userId)
         {
             var user = await userManager.FindByIdAsync(userId);
             if (!await UserService.IsUserValidAsync(userManager, user, clientId))
-                throw new Exception($"Unable to find user with ID '{userId}'.");
+                return null;
 
             var claims = await userManager.GetClaimsAsync(user);
             var marketingConsentClaim = claims.FirstOrDefault((claim) => claim.Type == $"{clientId}:marketing_consent");
@@ -46,7 +46,7 @@ namespace Streetwriters.Identity.Services
         public async Task DeleteUserAsync(string clientId, string userId, string password)
         {
             var user = await userManager.FindByIdAsync(userId);
-            if (!await UserService.IsUserValidAsync(userManager, user, clientId)) throw new Exception($"User not found.");
+            if (!await UserService.IsUserValidAsync(userManager, user, clientId)) return;
 
             if (!await userManager.CheckPasswordAsync(user, password)) throw new Exception("Wrong password.");